| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun sg] | 465207 |
|
| 2 | [is] a [noun sg] | 56921 |
|
| 3 | [is] [prep] [noun sg] | 10884 |
|
| 4 | [is] [prep] a | 5102 |
|
